—I have ______ to tell you. Please come to my office at lunch time.

—What's it? Tell me now, please! [ ]

A. something important

B. important something

C. anything important

D. important anything

属于矢量数据结构的是：（）。

A.四叉树数据结构

B.面条数据结构

C.曲面数据结构

D.拓扑数据结构